CVE-2026-24858 (GCVE-0-2026-24858)
Vulnerability from cvelistv5
Published
2026-01-27 19:18
Modified
2026-06-09 14:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-288 - Improper access control
Summary
An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.5, FortiAnalyzer 7.4.0 through 7.4.9, FortiAnalyzer 7.2.0 through 7.2.11, FortiAnalyzer 7.0.0 through 7.0.15, FortiManager 7.6.0 through 7.6.5, FortiManager 7.4.0 through 7.4.9, FortiManager 7.2.0 through 7.2.11, FortiManager 7.0.0 through 7.0.15, FortiNAC-F 7.6.3 through 7.6.5, FortiOS 7.6.0 through 7.6.5, FortiOS 7.4.0 through 7.4.10, FortiOS 7.2.0 through 7.2.12, FortiOS 7.0.0 through 7.0.18, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4.0 through 7.4.12, FortiProxy 7.2.0 through 7.2.15, FortiProxy 7.0.0 through 7.0.22, FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11 may allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices.
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fortinet | FortiWeb |
Version: 8.0.0 ≤ 8.0.3 Version: 7.6.0 ≤ 7.6.6 Version: 7.4.0 ≤ 7.4.11 cpe:2.3:a:fortinet:fortiweb:8.0.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:8.0.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:8.0.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:8.0.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.6.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.11:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.10:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.9:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.8:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.7:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortiweb:7.4.0:*:*:*:*:*:*:* |
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CISA Known Exploited Vulnerability
Data from the CISA Known Exploited Vulnerabilities Catalog
Date added: 2026-01-27
Due date: 2026-01-30
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Used in ransomware: Unknown
Notes: Please adhere to Fortinet's guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Fortinet products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see: https://fortiguard.fortinet.com/psirt/FG-IR-26-060 ; https://www.fortinet.com/blog/psirt-blogs/analysis-of-sso-abuse-on-fortios ; https://nvd.nist.gov/vuln/detail/CVE-2026-24858
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],
"defaultStatus": "unaffected",
"product": "FortiProxy",
"vendor": "Fortinet",
"versions": [
{
"lessThanOrEqual": "7.6.4",
"status": "affected",
"version": "7.6.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.4.12",
"status": "affected",
"version": "7.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.15",
"status": "affected",
"version": "7.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.22",
"status": "affected",
"version": "7.0.0",
"versionType": "semver"
}
]
},
{
"cpes": [
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"cpe:2.3:o:fortinet:fortimanager:7.2.7:*:*:*:*:*:*:*",
"cpe:2.3:o:fortinet:fortimanager:7.2.6:*:*:*:*:*:*:*",
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"cpe:2.3:o:fortinet:fortimanager:7.2.0:*:*:*:*:*:*:*",
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],
"defaultStatus": "unaffected",
"product": "FortiManager",
"vendor": "Fortinet",
"versions": [
{
"lessThanOrEqual": "7.6.5",
"status": "affected",
"version": "7.6.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.4.9",
"status": "affected",
"version": "7.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.11",
"status": "affected",
"version": "7.2.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.15",
"status": "affected",
"version": "7.0.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.5, FortiAnalyzer 7.4.0 through 7.4.9, FortiAnalyzer 7.2.0 through 7.2.11, FortiAnalyzer 7.0.0 through 7.0.15, FortiManager 7.6.0 through 7.6.5, FortiManager 7.4.0 through 7.4.9, FortiManager 7.2.0 through 7.2.11, FortiManager 7.0.0 through 7.0.15, FortiNAC-F 7.6.3 through 7.6.5, FortiOS 7.6.0 through 7.6.5, FortiOS 7.4.0 through 7.4.10, FortiOS 7.2.0 through 7.2.12, FortiOS 7.0.0 through 7.0.18, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4.0 through 7.4.12, FortiProxy 7.2.0 through 7.2.15, FortiProxy 7.0.0 through 7.0.22, FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11 may allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.4,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-288",
"description": "Improper access control",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-09T14:27:53.379Z",
"orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"shortName": "fortinet"
},
"references": [
{
"name": "https://fortiguard.fortinet.com/psirt/FG-IR-26-060",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-060"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to upcoming FortiOS version 8.0.0 or above\nUpgrade to FortiOS version 7.6.6 or above\nUpgrade to FortiOS version 7.4.11 or above\nUpgrade to FortiOS version 7.2.13 or above\nUpgrade to FortiOS version 7.0.19 or above\nUpgrade to upcoming FortiManager version 8.0.0 or above\nUpgrade to FortiManager version 7.6.6 or above\nUpgrade to FortiManager version 7.4.10 or above\nUpgrade to FortiManager version 7.2.12 or above\nUpgrade to FortiManager version 7.0.16 or above\nUpgrade to FortiAnalyzer version 7.6.6 or above\nUpgrade to FortiAnalyzer version 7.4.10 or above\nUpgrade to FortiAnalyzer version 7.2.12 or above\nUpgrade to FortiAnalyzer version 7.0.16 or above\nUpgrade to FortiProxy version 7.6.5 or above\nUpgrade to FortiProxy version 7.4.13 or above\nUpgrade to FortiProxy version 7.2.16 or above\nUpgrade to FortiProxy version 7.0.23 or above\nUpgrade to FortiWeb version 8.0.4 or above\nUpgrade to FortiWeb version 7.6.7 or above\nUpgrade to FortiWeb version 7.4.12 or above\nUpgrade to FortiNAC-F version 7.6.6 or above\nUpgrade to FortiSwitchManager version 7.2.9 or above\nUpgrade to FortiSwitchManager version 7.0.8 or above"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"assignerShortName": "fortinet",
"cveId": "CVE-2026-24858",
"datePublished": "2026-01-27T19:18:23.591Z",
"dateReserved": "2026-01-27T15:11:02.057Z",
"dateUpdated": "2026-06-09T14:27:53.379Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"cisa_known_exploited": {
"cveID": "CVE-2026-24858",
"cwes": "[\"CWE-288\"]",
"dateAdded": "2026-01-27",
"dueDate": "2026-01-30",
"knownRansomwareCampaignUse": "Unknown",
"notes": "Please adhere to Fortinet\u0027s guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Fortinet products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see: https://fortiguard.fortinet.com/psirt/FG-IR-26-060 ; https://www.fortinet.com/blog/psirt-blogs/analysis-of-sso-abuse-on-fortios ; https://nvd.nist.gov/vuln/detail/CVE-2026-24858",
"product": "Multiple Products",
"requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
"shortDescription": "Fortinet FortiAnalyzer, FortiManager, FortiOS, and FortiProxy contain an authentication bypass using an alternate path or channel that could allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices.",
"vendorProject": "Fortinet",
"vulnerabilityName": "Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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